Therefore, it is not desirable to select chemicals with highly variable in vivo results to benchmark data in the validation of in vitro methods.
Natural substances belong to the group of so called 'UVCB substances', which are chemicals with 'unknown or variable composition, complex reaction products or biological materials' [20].
It is composed of a glassy, vesicular, SiO2-rich material with variable chemical composition (Fig. 5). Figure 6 shows the chemical composition of the splash melt and the adhering particle.
Charnockite, any member of a series of metamorphic rocks with variable chemical composition, first described from the state of Tamil Nadu in southern India and named for Job Charnock.
This novel coating consists of alternating layers with variable chemical composition but similar crystal structure and hardness.
Scenario IV: Distinguishing chemicals in a structurally similar category with variable toxicities based on the MoA hypothesis.
Archaeological metals suffer different corrosion events during burial time that may lead to formation of different corrosion layers on their surface with variable thicknesses and chemical compositions.
We use an asymptotic method (from Liñan [21]) to derive analytical expressions for the profiles of all thermodynamic and chemical quantities of a diffusion flame with variable density, nonuniform Lewis number and finite rate chemistry, and for different configurations (unsteady unstrained, steady strained and unsteady strained flames).
Obviously, to yield the maximum information from the biomonitoring component of a farmworker study, the ideal assessment should include multiple, longitudinal 24-hr samples after a known exposure event to a known chemical with other potentially variable factors narrowly controlled.
In order to identify the key regions that are related to the chemical differences of sample groups, the PLS-DA approach was extended with variable selection.
